Discharge-valve.



Patented May 4, 1909.

2 SHEETS-SHEET 1.

0. S. SLEEPER.

DISCHARGE VALVE.

APPLICATION FILED SEPT. e, 1907. 920,201

a Y, l l. m/uwm" 0. S. SLEEPER.

DISCHARGE VALVE.

APPLICATION FILED SEPT. e, 1907.

920,201 Patented May 4, 1909.

2 SHBBTS-SHIIET 2.

Z'ITCGSJS" @den ,MZ/7 m. r6; 'e/(azz M UNITED STA'FIESPAIIENT OFFICE.

OLIVER S. SLEEPER, OF BUFFALO, NEW YORK, ASSIGNOR 'lO BUFFALO FOUNDRY COMPANY, OF BUFFALO, NEW YORh, A CORPORATION OF NEW YORK.

DISCHARGE -VALVE Specification of Letters Paten@- Patented May l4, 1909.

Application led September 6, 1907. Serial No. 391,543.

To all whom it may concern.'

York, have invented a new and useful Imi'ovement in Discharge-Valves, of which the l dinal movement of the gear wheel with the following is a specification.

The object of this invention is the. produc- 5 tion of an improved valve ,for the discharge L sure a ful or outlet of a continuous vacuum drier alj thoughthe saine may also be used for other a plug in line with the inlet and outlet of the purposes.' l

In the accompanying drawings consisting of 2 sheets :-Figure l is a vertical transverse section of my improved discharge valve. Fig. 2 is a horizontal section thereof. F-ig. 3 is a vertical longitudinal section thereof. Fig/l is a diagrammatic view similar to Fig. 1 s owing another position of the plug and piston.V4 y f Similar letters of referenceindicate corresponding arts throughout the several views. The bo y or casing- A of the valve preferably has. the form of a horizontal cone and is provided with a conical valve seat a. The small end of the casi-ng is closed by a fixed head B and its large end is 'closed bya removable head'C. The inlet D of thevalve casing is Iat its top andthe outlet D1 at the bottomthereof.

Within thevalve-seat rotates'the conical valve plug E which is provided at its large end with a central outwardly .projecting stein or shank F. The-plug-is rotated by' means of a driving shaft G journaled parallel with the axis of theI plug in a bearing g at the side of the casing-a pinion h arranged on one a end ofthe driving shaft and meshing with a gear wheeljlon t ie pl stenifand a Idriving pulley I arranged' onit e other end of the dri shaft. The plugis constantly pressed towar thek small end of the valve seat by'a springhJ'surrennding the shank within a hub buon t e head B and bearing at its' inner end against a shoulder j on theplug, a:gland or collarK sliding on the shank and bearing against the outer end of the spring and provided on opposite sides with eyes 1c, stud bolts L secured at their inner ends to the head B and. 'arranged at their outer ends in 'said` eyes, and screw nuts 1,11 applied to each spring may be lregulated to produce the resaid inlet and outlet.

puired endwise. pressure of the plug against. t ie seat of the casing for forming a tight joint between the same and automatically taking up any wear between the same. The pinion is preferably made wider than the gear wheel so as to permit of the requisite longituwhile taking up wear and still indriving contact between the pinion and gear wheel.

Extending diameti'ically through the valve valve plug casing is a cylindrical chamber, opening or port M of substantially the same diameter as Within this chamber a hollow cylindrical piston or plunger 'm reciprocates transversely to the axis of rotation of the valve plug. rlhe latter -is shorter than the length of the chamber and has its ends rounded and beveled so that when the -saine yis moved to its extreme position in either direction one end of the piston will be Hush' withthe corresponding side of the plug while its other end will-be drawn inwardly from the yother side of the plug and form a cavityin the latter.

The means for effecting the reciprocating movement of the :piston in the plug are constlr'uctedas follows:4

N represents `a stationary 'arbor'arraiiged axially relatively-to the valve seat and lug andsecured at its'outer endl inra hub n o the fixed head of the A casing hya. set screw 'nl while its inner end projects inwardly through o enings o, 01 in the small end of the plug and t 1e corresponding side of the piston. -Ny'itilv in the piston the arbor is provided with a laterally projecting cam vl? which engages on its opposite sides with parallel guide ways or faces'q, q1 arranged transversely on the This cam is preferprovided on its lowest, and highest parts with lconcentric faces p, p1 and between opposite ends of the concentric faces with cam faces p ,-p3. The position of the faces of the cam relative to the casing is preferably such that the front end of the low face and the front end of the high face are in line with the axis of the inlet and outlet of the casing while the rear end of the low face and the rear end of the high face are arranged on aline at right angles to the axis of the inlet and outlet of the casing. This form of cam causes the piston upon being turned with the plug about the axis ofthe latter to be also reciprostruction is simple, cheap and not liable to cated transversely in the chamber thereof so that its opposite ends alternately are flush with the' respective side of the plug or are retracted inwardly from the same and form a pocket in the respective end of the chamber 1n the plug. This retraction oi' the piston in each end of the plug chamber beglns when the front or advancing side of each end of the chamber is adjacent to the front side of the inlet of the casing and when this end of the chamber is axially in line with the inlet,+the piston is moved downwardly to its fullest extent, as shown in Fig. 1, whereby Va cavity of the maximum size is formed in the up er end of the lug chamber and the lower en of the cham er is completely obstructed by the piston. T he latter remains in this position during the continued forward rotation of the plug, the direction of which is indicated by the arrow in Fig. l, until the axis 0f the chamber and piston is at right angles to the axis of the inlet and outlet, as shown in Fig. 4. While the cavity in the upper side of the plug thus asses the inlet, the inaterial passes throug the latter into this cavity and fills the same. Upon continuing the rotation of the plug in this direction the piston is moved transversely in the opposite direction in the plug by the cam and completes this movement when the rear edge of the respective end of the plug chamber is adjacent to the rear edge of the outlet of the casing, whereby the material is ejected by the piston from the respective end of the piston chamber into the outlet of the casing while passing the same.

lVhile the material is being discharged from the lower end of the plug chamber by the piston the upper end 0i this chamber is vacated by the piston and material is entering the same preparatory to being discharged therefrom when the said end of the chamber reaches the underside of the plug. In this manner the material is admitted and discharged from both ends of the chamber successively.

The front and rear heads of the casing are provided at the bottom of the valve seat,

with 0 penings 1', 8 to permit of draining oil anddestroying any vacuum which may be created at opposite ends of the valve seat due to leakage around the valve plug. Theseopenings are normally closed by screw plugs 11, s1, as shown in Fig. 3. In its operation this valve is very efficient and its c0nget out 0l' order.

I claim as my inventionz- 1. A valve comprising a casing havin a valve seat and an inlet and an outlet, a p ug rotatable in said seat and having a chamber or pocket extending transversely through the same, a piston reciprocating in ,'said chamber or pocket, and a stationary vcani having concentric and eccentric faces which engage with the piston and whereby the latter during part of the rotation of the plug is moved transversely in the plug While during another part of the rotation of the plug the piston is held against transverse movement therein, substantially as set forth.

2. A valve comprising a casing havin a valve'seat and an inlet Iand an outlet, a p ug rotatable in said seat and having a pocket, a piston reciprocating insaid pocket, and a cam device for actuating said piston, substantially as set forth.

3. A valve comprising a casing'havin a valve seat and an inlet and an. outlet, a p ug rotatable in said seat and having a pocket, a piston .reciprocating in said pocket, and means for actuating said pistonhaving a cam engagingwith the piston, substantially as set forth.

4. A valve comprising a casing having a valve seat and an inlet and an outlet, a plug rotatable in said seat and having a chamber extending diametrically through said plug', a hollow piston reciprocating in said chamber, and a stationary cam supported on the casing and engaging with the inner side of said piston, substantially as set forth.

5. A valve comprising a casing having a Valve seat and an inlet and an outlet, a plug rotatable in said seat and having a chamber extending diametrically through said plug, a hollow piston reciprocating in said chamber and provided on its. inner side with two parallel transverse faces or ways, a stationary arbor mounted on said casing and projecting through the plug and piston into the interior of the latter, and a stationary cam arranged on the arbor and engaging on opposite sides of its periphery with the bearing faces on said piston,'substantially as set forth.

Witness my hand this 3rd day of September, 1907.

OLIVER SSLEEPER- Vitnesses:

. THEO. L. PoPP, ANNA Hnrers.` 

